[CinCV TNG] Hardware acceleration problem

KhazAkar damianzrb at gmail.com
Thu Jun 7 09:45:44 CEST 2018


I have one more question - If It works what you showed to me, so why my CPU
is smashed when using X11 with direct X11 rendering, but with X11-Xv and
X11-OpenGL - not so much? It seems that Cinelerra don't utilize GPU with
X11 with direct X11 rendering  so much it can.

czw., 7 cze 2018 o 01:49 użytkownik KhazAkar <damianzrb at gmail.com> napisał:

> Ah, ok. Thanks very much for explaining it for me. I really love your work
> done on Cinelerra side.
>
> czw., 7 cze 2018 o 00:42 użytkownik Good Guy <good1.2guy at gmail.com>
> napisał:
>
>> This is the way it works since Adam Williams added the Direct Path
>> changes to the vdeviceX11 code.  It is a direct draw path and the
>> execution time for that path is low when the render does not require
>> remapping.  This is not a bug, it is a good idea.  It is fastest.
>>
>> Next, X11-Xv is a device mapped video draw.  it is fast, but apparently
>> not as fast as the direct draw.  It can do hardware scaling and color
>> mapping.
>>
>> OpenGL means that drawing is using a second level machine, which
>> brings good functional features, but may be slower yet to just buffer
>> video frames.
>>
>>
>>
>> On Wed, Jun 6, 2018 at 4:26 PM KhazAkar <damianzrb at gmail.com> wrote:
>>
>>> I have a strange problem with X11-Xv and X11-OpenGL preview in
>>> Cinelerra-GG.
>>> X11 is the fastest option for me for preview, X11-Xv slover and
>>> X11-OpenGL - the slowest. Why this is happening?
>>> My setup:
>>> Dell Precision 5510 with i7-6820HQ, 32 GB DDR4 RAM, 512 GB Samsung SSD,
>>> Quadro M1000M, 4k IGZO display, OpenSUSE Tumbleweed, newest kernel etc.
>>> Why this is happening? Some sort of bug?
>>>
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>>> http://lists.cinelerra-cv.org/cgi-bin/mailman/listinfo/cinelerra
>>>
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>>
>
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